Genuine Mazda Front Steering Knuckle / Hub Mounting Bolt • 9YA1-61-002

Genuine Mazda 9YA1-61-002 Front Steering Knuckle / Hub Mounting Bolt

Replacement Genuine Mazda front steering knuckle / knuckle assembly mounting bolt for Mazda MX-5 Mk3, Mk3.5 and Mk3.75 / NC and Mazda RX-8 models listed in the compatibility table.

This high-strength mounting bolt is used within the front steering-knuckle and hub assembly. It secures the relevant suspension and wheel-hub components in their correct position, helping maintain dependable clamping force, wheel alignment and compatibility between the front suspension parts.

The bolt is fitted at the front steering knuckle and may be used on either the left- or right-hand side. This listing is for one Genuine Mazda bolt. The total quantity required depends on the repair being carried out and the number of fasteners being replaced.

Replacement is recommended where the original bolt is corroded, seized, stretched, damaged around the threads or head, or has been removed during wheel-bearing, hub, steering-knuckle or front-suspension work. Suspension fasteners should not be reused where their condition or serviceability is uncertain.

• Part type: Front steering knuckle / knuckle assembly mounting bolt
• Primary use: Secures components within the front steering-knuckle and hub assembly
• Location: Front suspension and wheel-hub assembly
• Position: Left or right front
• Quantity per vehicle: Application dependent
• Quantity supplied: 1 bolt
• Brand: Genuine Mazda
• Part No.: 9YA1-61-002
• Also referenced as: 9YA161002
• Fitment note: Suitable for the Mazda MX-5 NC and Mazda RX-8 front steering-knuckle applications listed in the compatibility table

Fitment advice: Identify the exact bolt position within the steering-knuckle assembly before removal and compare the original thread, length and head design with the replacement fastener. Inspect the mating threads, knuckle, hub and surrounding suspension components for corrosion, distortion or damage before reassembly.

Other items to consider: When changing this part, you may also want to consider purchasing the corresponding nut where fitted, additional steering-knuckle bolts, wheel-bearing or hub components, suspension-arm fasteners and replacement split pins or locking hardware required for the repair.

Useful tools / consumables: Vehicle lift or suitable axle stands, socket set, breaker bar, torque wrench, penetrating fluid, wire brush, thread-cleaning tools and suitable workshop corrosion protection.

Difficulty guide: DIY Difficulty: Moderate to Advanced. The vehicle must be supported securely and suspension components may need to be separated or supported during removal. Correct fastener positioning and final tightening to Mazda’s specified torque are essential.

Why Genuine Mazda? Genuine Mazda suspension fasteners are designed to match the original thread specification, dimensions, strength grade, clamping requirements and surrounding steering-knuckle components. Using the correct OE fastener helps maintain factory suspension geometry, secure component retention and reliable front-hub operation.

What’s in the box: One Genuine Mazda front steering knuckle / knuckle assembly mounting bolt.

Installation notes: Raise and support the vehicle securely before beginning work. Clean the mating threads and inspect all associated components before assembly. Position the bolt in the same orientation as the original fastener and tighten it to the Mazda-specified torque using the correct procedure. Where suspension-bush fasteners are involved, complete final tightening at the specified normal ride-height position.